Colorado Springs is a home rule municipality in, and the county seat of, El Paso County, Colorado, United States. It is the largest city in El Paso County, with a population of 478,961 at the 2020 United States Census, a 15.02% increase since 2010. Colorado Springs is the second-most populous city and the most extensive city in the state of Colorado, and the 40th-most populous city in the United States. It is the principal city of the Colorado Springs metropolitan area and the second-most prominent city of the Front Range Urban Corridor. It is located in east-central Colorado, on Fountain Creek, 70 miles (113 km) south of Denver.
Rongjiang, formerly known as Guzhou, is one of the 800 prefectures in the south of the Yangtze River, belonging to Qiandongnan Miao and Dong Autonomous Prefecture. It is located between 108 °04 east longitude and 108 °44 'east longitude and 25 °26 °28' north latitude. It is located in the center of the junction of Hunan, Guizhou and Guangxi provinces, bordering Liping County and Congjiang County in the east, Leishan County and Sandu County in the west, Jianhe County in the north and Libo County in the south. It has been known as "the lock key in southeastern Guizhou Province and the first important area in Miaojiang" since ancient times. The county has a total area of 3315.8 square kilometers and has jurisdiction over 6 towns, 13 townships and 268 administrative villages, with a total population of 350000, of which 298000 are from Dong, Miao, Shui, Yao and other ethnic minorities, accounting for 85.14% of the total population. The government is stationed in Guzhou town. With a mild climate and abundant rainfall, Rongjiang is the "priority tourism development area of Guizhou Province".